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predisposition
prednisolone
prednisone
predoctoral
predominant
predominantly
predominate
preeclampsia
preembryo
preemie
preeminent
preempt
preemption
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preemptive right
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preembryo
pre·em·bry·o [ pree émbree  ] (plural pre·em·bry·os)


noun 
Definition:
 
fertilized egg: a fertilized ovum before implantation in the womb and before differentiation of embryonic tissue

pre·em·bry·on·ic [ pr embree ónnik ] adjective
Encarta® World English Dictionary [North American Edition] © & (P)2007 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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